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Discuss advantages, disadvantages and applications of adhesive bonding.

Mumbai University > Mechanical Engineering > Sem 3 > Production Process 1

Marks: 5M

Year: May 2016

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Advantages

  • The adherents are not affected by heat
  • Uniform stress distribution
  • Possibility to join large surfaces
  • Possibility to join different materials
  • Possibility to join very thin adherents
  • Gas-proof and liquid-tight
  • No crevice corrosion
  • No contact corrosion
  • No precise fits of the adherent surfaces are necessary
  • Good damping properties
  • High dynamic strength

Disadvantages:

  • Limited stability to heat
  • Long-term use may alter the properties of the bond-line
  • Cleaning and surface preparation of the adherents is necessary in many cases
  • Specific production requirements to be met
  • Specific clamping devices are often required to fix the joint
  • Non destructive quality testing is only possible to a certain extent

Applications:

  • Bonding of metal to non-metals especially plastics is the major application of adhesive bonding.
  • Used as an alternative to riveting for aircraft structures.
  • Widely applicable in fastening of stiffeners to the aircraft skin and in assembling honeycomb structures in aircraft
  • Using extensively in the fabrication of aircraft internal structures and providing the smooth surface for supersonic planes.
  • Useful in automobile industry for attaching brake lining to shoes, automatic transmission bands, and stiffeners
  • Find applications in the fabrication of railway coaches, boats, refrigerators, storage tanks, and microwave reflectors for radar and space communications
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